Draft Ocean Beach Master Plan Part II

Dear Surfriders and Friends,

I trust by now most of you have reviewed the draft master plan and have provided comment. If not, please do so as the official comment period closes this Friday 11/18 at 5pm. See: http://www.spur.org/ocean-beach There is a survey monkey link on the page for your feedback.

In the last post, the issue of the feasibility study of the Lake Merced Transport Box was covered. One other issue surrounding the Box as well as the Master Plan has to do with timelines.

It will be several years between the time that a long term plan is adopted for Sloat and when construction is completed. Surfrider believes that the city should adopt an interim erosion response plan asap. Such a plan should exclude armoring projects such as large scale quarry stone revetments. A good plan would have minimal environmental impact and have a strict expiration date. We are working through SPUR to make this happen right now. It would be a tragedy to see the master plan's recommendations get circumvented by an untimely erosion event.

One other noteworthy issue in the draft has to do with access. The draft master plans suggests several changes to beach parking. At Sloat's first lot (north) the draft recommends that parking be transferred to Sloat Blvd. This makes sense if adequate parking spaces are made available for beach access on Sloat. They should be as close as possible to the Great Highway intersection. Unfortunately, the draft is not clear on this point. We urge you to ask SPUR to incorporate this idea. Many people that come to Ocean Beach have to drive to get there. Quality parking space needs to be preserved.

Parking at the north end lots (Kelly's and VFW's) are also slated for changes. In Key Move #5 of the draft Master Plan, a proposal for charging fees for parking on peak days is floated. Surfrider urges folks to oppose any fees for access to Ocean Beach.

Projected Sea Level Rise for Ocean Beach - Why Managed Retreat as a Long Term Strategy

The Future of Ocean Beach? The beach at Sharp Park (Pacifica) is disappearing under a pile of armor. Click photo to see close-up.


Dear Surfriders and Friends,

Many may be surprised to hear that there is a looming threat of beach loss at central Ocean Beach. Below are a few links to scientific reports that have informed this projection. They deal with sea level rise. According to the Pacific Institute report, sea levels off the CA coast have risen 8 inches over the last 100 years. By 2100, sea level rise is predicted to rise another 1.0-1.4 meters (4’-5’). Although sea level rise projections are estimates, the trend lines behind this projection are serious. We should prepare for significant impacts. Middle Ocean Beach has been eroding for some time. We should expect beach loss to continue. However, as compared to Sloat, there is a greater opportunity to slow it down with sand nourishment and strategic sand management practices. This should allow us to buy time for proper planning.

Surfrider believes the sooner we embrace a strategy of Managed Retreat, the better off we will all be – taxpayers, beach users, and ecology. An encroaching high tide line is part of a natural process. If our city chooses to hold fast to existing boundaries, we can expect to see results like we have in the photo above. This is a group of revetments recently placed on the beach at Sharp Park, in the neighboring town of Pacifica. It's not a pretty picture. They are wiping out their beach.

This ia a graphic derived from the statewide study showing the potential erosion by 2100 based on 4.6’ of sea level rise. http://www.pwa-ltd.com/about/about_news.html#OPC_Report

The report by PWA:
http://www.pwa-ltd.com/about/news-CoastalErosion/PWA_OPC_Methods_final.pdf

Here is a link to the Pacific Institute report that this work fed into:
http://www.pacinst.org/reports/sea_level_rise/

Here is the State Adaptation Strategy that was affected by this work:
http://www.climatechange.ca.gov/adaptation/

Last Week's SF PUC CAC Meeting

Last week Bill and I attended a Citizenz Advisory Committee meeting for the SF PUC. The main topic on the agenda was our Sloat erosion, or from their point of view, the impact on the facilities for the Westside Treatment Plant. The main topics were presentations by Coastal Engineer Bob Battallio of PWC, Frank Filice of DPW, and a few comments on the PUC's handling of sea level rise by PUC engineer Jonathan Loiacono. I'll try to get a copy of those presentations and post the Power Points.

Bob presented first and went over some of this history of the area. One of his main points is that the area that eroded was largely unconsolidated fill placed after the construction of the Merced Tunnel, and that the natural shoreline fluctuated on multi-decade cycles. He showed some old photos of when that area was gently sloping grass-covered dunes, and contrasted them with photos of the area today, where steep bluffs are easily undermined. The contrast served to remind the audience that making even the nicest dunes in the area where the shoreline fluctuates will be washed away. He espoused relocating the waste water tunnels in the area.

Frank Filice updated the audience on the DPW's current construction and future plans. The rock revetment that is being constructed to stabalize the toe of the bluff is nearing completion. The cost is coming in at around $2.9M for about 425 ft of length. Much of those costs should be recoverable through California Emergency Management. Phase II of the project consists of stabilizing the top of the bluff, Phase III consists of reworking the Great Highway back a few dozen feet to about the current centerline of roadway. Phase IV consists of reconstructing the dune. He also spoke in detail about how the schedule is working around the Bank Swallows.

My impression is that DPW is glad to have made it through the winter storms and is now working on doing the real engineering work. Likewise, the PUC is becoming more active in the process as they realize the DPW's road may not be enough of a buffer to prevent the PUC from having to worry about erosion.